Chemistry Cumulative Review Latest Update Graded A+
Chemistry Cumulative Review Latest Update Graded A+ Electronegativity The tendency of an atom to attract electrons in a chemical bond. It is not directly measurable. Metals have low electronegativity, meaning they do not hold onto electrons tightly and often lose them in reactions. Nonmetals have high electronegativity, meaning they hold onto electrons strongly and often gain electrons from other elements. Covalent Bond The sharing of electrons between two nonmetal atoms. Nonmetal atoms share electrons because neither wants to lose electrons, so they share to satisfy their valence shell (Octet Rule). 2 Ionic Bond The transfer of electrons occurring only between nonmetals and metals. Metallic Bond The bond between metal atoms where electrons are free to move through the "sea of electrons." Lewis Dot Structures Diagrams that show the arrangement of valence electrons around atoms. They help predict how atoms will bond with each other. Valence Bond Number 3 The number of unpaired electrons in the Lewis Dot Structure, which corresponds to the column number in the periodic table. Shared Pair A pair of electrons shared between two atoms in a covalent bond. Lone Pair
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